Means for creating a marginally reduced reproduction of a design



Feb. 27, 1940. Q HUGGlNs 2,191,483

MEANS FOR CREATING A MARGINALLY REDUCED REPRODUCTION OF A DESIGN Filed June 5, 1937 5 Sheets-Sheet 1 lNVEjgTOR A TTORNEY Feb. 27, 1940. o. R. HUGGINS 2,191,483

MEANS FOR CREATING A MARGINALLY REDUCED REPRODUCTION OF A DESIGN Filed June 5, 1957 5 Sheets-Sheet 2 (am/a. Emma ATTORNEY 1940- o. R. HUGGINS MEANS FOR CREATING A MARGINALLY REDUCED REPRODUCTION OF A DESIGN Filed June 5, 1937 5 Sheets-Sheet 3 if; M!!! 5. i 91 iiii w -uqlllli 1B 92 (96' 87 INVENTOR 68 if" I, \i z 3] 75 BY g ,& 64 85 78 ATTORNEY Feb. 27, 1940. O HUGGlNs 2,191,483

MEANS FOR CREATING A MARGINALLY REDUCED REPRODUCTION OF A DESIGN Filed June s, 1937 5 Sheets-Sheet 4 ,16 A l i /1.0 Jfl/ w 17 J9 W*i'r- J 45? 1 .1 D INVENTOR BY 6 g; 4

ATTORNEY Feb. 27, 1940. O HUGGINS 2,191,483

MEANS FOR CREATING A MARGINALLY REDUCED REPRODUCTION OF A DESIGN Filed June. 3, 1937 5 Sheets-Sheet 5 A TTORNEY Patented Feb. 27, 1940 UNITED STATES PATENT OFFICE MEANS FOR CREATING A MARGIN ALLY REDUCED REPRODUCTION OF A DESIGN Application June 3, 1937, Serial No. 146,218

7 Claims. (Cl. 88-24) This invention relates to photography, and it has for its general object the provision of means for creating a marginally reduced reproduction of a design.

In accordance with the present invention, the above as well as other objects are attained by exposing a light sensitive surface to the design or to an image thereof and changing the position of the design or image edgewise a given distance with respect to the position of the sensitized surface. When the sensitized surface is initially exposed a reproduction of the design or image is created thereon in the form of affected and unaffected areas, and as the position of the design or image is changed edgewise the unaffected or light sensitive areas of the reproduction are exposed to only a marginal portion of the design or image, and, in consequence, the size of the unaffected or light sensitive areas is reduced mar- 2 ginally a distance equal to the distance that the design or image is moved edgewise.

For a detailed description of the invention reference may be made to the accompanying drawings wherein;

25 Fig. 1 is a side elevation of a camera employed in practicing the present invention;

Fig. 2 is a rear elevation, partly in section and broken away, of a copy board and its associated mechanism which is also employed in practicing so the present invention;

Fig. 3 is a side elevation of Fig. 2;

Fig. 4 is a horizontal section taken along line l4 of Fig. 3;

Fig. 5 is a vertical section taken along line 35 5-5 of Fig. 2;

Fig. 6 is an enlarged vertical section showing the copy board actuating mechanism;

Fig. 7 is a detail vertical section of the upper eccentric connection between the driving shaft 40 and the copy board;

Fig. 8 is a detail horizontal section taken along line 8--8 of Fig. 6;

Fig. 9 is a detail perspective view of the lower eccentric connection between the driving shaft '5 and the copy board;

Fig. 10 is a diagrammatic view which shows an image of the design moved edgewise in one direction in front of a light sensitive surface to expose the surface to a marginal portion of the design;

50 Fig. 11 is a diagrammatic view which shows the image moved edgewise in the opposite direction to expose the surface to the oppositely disposed marginal portion of the design;

Fig. 12 is a diagrammatic view which shows the 5 image moved edgewise in all directions to expose the surface to a marginal portion of the design around its entire periphery.

For the purposes of illustration, a desi having a number of square elements hasbeen chosen, and in practising the invention as shown di- 5 agrammatically in Figs. 10, 11, and 12, a positive 22 is prepared having opaque image areas 23 bounded by a light reflecting surface 2|. A light sensitive plate 2| is exposed to the positive through a lens 14 and the positive is moved edge- 10 wise in its own plane in the direction of the arrow a distance (d) as shown in Fig. 10. When the plate 2| is initially exposed, reproductions of the opaque image areas 23 are created thereon in the form of light sensitive or unaffected areas 25 15 while the remaining area 26 of the exposed plate (shown in full lines in Fig. 10) becomes affected by the light which is reflected back through the lens it from the light reflecting surface 24. However, when the positive 22 is shifted edgewise a distance (d) the light sensitive or unaffected areas are exposed to only a marginal portion (111) of the opaque image areas 23 and in consequence the width of the reproductions of the design elements as represented by the light sensi- 25 tive or unaffected areas 25 are reduced marginally a distance (d (shown by the shaded portions in Fig. 10) which corresponds to the distance (d) which the positive is shifted edgewise, this being true since the light reflecting surface 24 of the positive 22 is shifted accordingly. Again, when the positive 22 is shifted edgewise in the opposite direction a distance as shown in Fig. 11, the light sensitive or unaffected areas 25 are exposed to the oppositely disposed marginal portion (m) of the opaque image areas 23 and as a result the width of the reproductions of the design elements as represented by the light sensitive or unaffected areas 25 is further decreased from the opposite edge a distance (41 In consequence by progressively shifting the positive 22 edgewise in all directions a givendistance, or in other words by revolving it without rotation through a path of a given radius in front of the light sensitive surface 2| as shown diagram- 5 matically in Fig. 12 the areas 25 on the plate 2| which remain unaffected are exposed to 2. marginal portion of the opaque image areas 23 around the entire peripheries thereof, and as a result the reproductions of the design elements as represented by the light sensitive or unaffected areas are reduced marginally in all directions a distance equal to the distance of the edgewise movement of the positive 22.

In the present embodiment of the invention "the light sensitive plate 2| is positioned in a holder 23 of what is commonly known as a process" camera l5. The camera I5 is mounted on an elongated frame II and, as usual, it is provided with a lens I5 and a shutter IS. The positive 22 is secured to the front face of a copy board II carried by an upright supporting frame It which is so on the elongated frame II that the positive 22 is positioned parallel with and centrally before the lens I and the light sensitive plate 2|. The copy board I! to which the positive 22 is secured is adapted and arranged to be revolved in front of the camera, and to this end it is provided with a back supporting plate as is clearly shown in Figs. 2, 3, 4, and 5.

The plate 32 is connected by means of studs 3| to vertically aligned faces of lugs 32 which project forwardly from the front face of the upright supporting frame I5, and to permit edgewise movement of the plate 30 and the copy board ll carried thereby and at the same time maintain the plate 33 flush against the aligned faces of the lugs 32 so that the plate will revolve in its own plane the recesses 33 in which the heads of the studs 3i are positioned and the holes 34 through which the shank portion of the studs extend are enlarged.

As shown more clearly in Figs. 2, 5, 6, and 7 the edgewise movement of the copy board ll in all directions is effected by means of a pair of vertically aligned shafts 35 and 33 journaled in bearings 31 and 32, respectively, which are carried by the upper and lower portions of the supporting frame l5. One end of each of the shafts is provided with a drive block 39 which is fixedly secured thereto as by a pin 10, and each drive block is coupled to an eccentric block ll from which a stud l2 protrudes in eccentric relation with respect to the drive shafts. The stud which protrudes from the upper eccentric block is journaled in a blind anti-friction bearing 43 inserted into the upper central portion of the back plate 33 and the stud which protrudes from the lower eccentric block is journaled in a similar bearing 43a inserted into the lower central portion of the back plate 33. The vertically aligned shafts 35 and 35 are driven from an electric motor ll mounted on a bearing plate 45 carried by the lower portion of the supporting frame IS, the power from the motor being transmitted to the shafts 35 and 35 through a pair of reducing gears 56, and a pair of associated beveled gears 46a, an angularly disposed shaft 41, a pair of lower beveled gears 43, an upright shaft 49, a pair of upper beveled gears 53, a horizontally disposed shaft 5| and a pair of beveled gears 52. As the vertically aligned shafts 35 and 35 are driven by the electric motor 53, the drive blocks 39, the eccentric blocks ll, and the studs 42 which project therefrom in eccentric relation with respect to the shafts 35 and 35 are rotated accordingly. In consequence, the copy board H which carries the anti-friction bearings 43 and 43a in which the ends of the studs 52 are journaled is revolved without rotation or moved without any disturbance in the angles of its horizontal or vertical axes in a circular path having a radius equal to the distance between the studs 42 and the shafts 35 and 36; and as the copy board I1 is so revolved the positive 22 mounted thereon is likewise moved in a similar circular path in front of the lens I and the light sensitive plate 2|. Under these conditions, as heretofore explained, when the shutter I! of the camera is open and the plate 2| is exposed, the light sensitive or unaffected areas 25 which remain on the plate are exposed to a marginal portion of the opaque image areas 23 around the entire peripheries thereof, and, as a result, the reproductions of the design elements are reduced marginally a distance equal to the radius of the circular path through which the positive rotates.

To permit the reproductions of the design elements to be reduced marginally different widths, as may be desired, the eccentric blocks ll which carry the studs 42 are slidably connected to the drive blocks 39 by a v-shaped tongue and groove arrangement. As shown more clearly in Fig. 6, the lower eccentric block is provided with a micromatic adjusting screw 55 which is threaded through an aperture therein and which is journaled at both ends in bearing plates 53 and 51 carried by the drive block. As shown more clearly in Fig. 7, the upper eccentric block is normally maintained locked to the upper drive block by means of a pair of lock screws 58 and 53 threaded through apertures in plates 60 and BI carried by the upper drive block. To vary the distance between the centers of the studs 42 and the shafts 35 and 36 the lock screws 58 and 53 are backed off and the shafts 35 and 36 turned until the studs 42 are brought into vertical alignment. The adjusting screw 55 is then turned to change the position of the lower eccentric block on the face of the lower drive block, and as the position of the lower eccentric block is so changed the position of the upper eccentric block on the face of the upper drive block is simultaneously changed a like amount through the medium of the back plate 30 which serves as a connecting link between the two studs journaled therein. After the desired adjustment has been made the lock screws 53 and 59 are then turned into engagement with the upper eccentric block to lock the assembly in position.

By the above described arrangement the reproductions of the design elements may be reduced marginally any given distance but the distance they are so reduced remains constant around the entire peripheries thereof. In accordance with another feature of the invention means are provided whereby uneven marginally reduced reproductions may be obtained, and to this end the copy board I! is adapted and arranged to be moved edgewise in opposite directions beyond the limit of the circular path through which it travels as it is revolved by the above described arrangement. As shown more clearly in Figs. 2, 3, and 4, the supporting frame Ii which carries the copy board I1 is movably mounted by means of four rollers 62 to inclusive upon a pair of spaced track members 65 and 61 which extend transversely across the upper side bars of the elongated frame ii, the two front rollers '62 and 63 being journaled on shafts Ill and 'II which project forwardly from the opposite lower front corners of the supporting frame It and the two rear rollers 64 and 55 being journaled on shafts 12 and 13 which project rearwardly from the opposite lower rear corners of the supporting frame l5. Movement of the frame I to carry the copy board l1 edgewise is effected by. means of a rock shaft 15. This rock shaft 15 is journaled in bracket members 16 and 'I'! carried by the frame It and it is provided at one end with a crank handle I3 and at its central portion with a worm l9 threaded through a boss 20 secured to the underside of the frame [3, the arrangement being such that by turning the shaft 15 in opposite directions by means of the handle 13 the frame I. maybe moved laterallyto andfro as desired. .To limit the throw of the handle I8 a pair of adjustable stop blocks 8i and 82 are mounted on a rotatable screw rod 83 on each side and in the arcuate path of a short arm 84 rising from the hub 85 of the handle I8. 'lhescr'ew rod 83 is journaled in bearings 88 and 81 carried by the frame i8, and it is provided with right and left hand threaded sections and with which the blocks 8i and 82 are-engaged.- At one end the screw rod 83 is provided with a knurled head portion 90 by means of which it may be rotated and at the other end it has an annular groove 9i to receive a guide screw 82 mounted in the hearing 86 to prevent endwise displacement of the screw. By rotating the screw rod 83 in opposite directions the stop blocks II and 82 are moved simultaneously toward and away from the arm 84, and when the blocks are in contact with the arm as shown in Fig. 3, the rock shaft I5 is locked against movement and the supporting frame It is held in its normal or centered position. When, however, the blocks 8| and 82 are moved away from the arm 84, as indicated by dotted lines in Fig. 3, the rock shaft 15 may be turned to shift the frame IE to and fro. The extent of movement of the frame It in either direction may be determined by a micromatical scale 98 secured to the bracket 94 and arranged to be read in conjunction witha pointer 85 carried by the stop block 82.'

To obtain an uneven marginal reduction around the peripheries of the reproductions 'on the plate 2|, the frame I6 is postioned centrally before the camera; l5 and the eccentric blocks 4| are adjusted to obtain an even marginal re-- duction of a desired width in the manner hereto-' fore explained. The copy board I I isthen centered with respect to the lens l4 and the plate 2] by adjusting the eccentric blocks 4| until the axisof rotation of the studs 42 arein line with the axis of rotation of the driveshafts 35 and 36 respectively and the frame it carrying the copy board I1 is shifted to one side by rotating the rock shaft 15 until the arm 84 banks against the block 8| which has been so set that when the handle 18 banks against it the frame I6 is shifted until the remaining portion of the light sensitive unaffected areas 25 of the light sensitive plate 2| is exposed to a narrower marginal portion of the opaque image areas 23. Thereafter,

the rock shaft 15 is turned in the other direction to shiftthe frame it in the other direction until the arm 84 banks against the other stop block 82, and as the frame; is thus shifted the unaffected or light sensitive areas 25 are exposed to the oppositely disposed marginal portion of the opaque image areas. In consequence, by the arrangement shown and described it is possible to expose the light sensitive or unaffected areas 25 on the plate 2| to a marginal portion of uneven width around the periphery of the opaque image areas 23 on the positive 22, and in so doing create reproductions of the image areas which are reduced accordingly.

From the above description, itis obvious that reproductions reduced marginally any desired distance could be created by properly changing the relationship between the plate 21, the lens I4, and/or the positive 22.

Also, in the present embodiment of the invention, a positive of the design element is specified as being mounted on the copy board, but it is obvious that if a negative of the design is preu pared and mounted on the copy board the un- Having thus described my invention, I claim:

1. In a photographic machine for creating a marginally reduced reproduction of a design, the

' combination of a camera, a copy board therefor,

a supporting frame for said copy board, a plurality of means for securing said copy board to said frame and adapted to permit limited relative movement therebetween, and means for moving said copy board edgewise in a circular path with respect'to said frame and before the lens of the camera.

.2. In a photographic machine for creating a marginally reduced reproduction of a design, the combination of a camera, a copy board therefor, a supporting frame for said copy board, a pinrality of means for securing said copy board to said frame and adapted to permit limited relative movement therebetween, means for moving said copy board edgewise in a circular path with respect to said frame and before the lens of the camera, and means for varying the radius of the circular path through which said copy board is moved.

3. In a photographic machine for creating a marginally reduced reproduction of a design, the

combination of a camera, a copy board therefor, a supporting frame for said copy board, a plurality of means for securing said copy board to said frame and adapted to permit limited relar inovement therebetween, a drive shaft, and eccentric means interposed between said driveshaft and said copy board and adapted to move said copy board edgewise in a circular path in response to therotation of said drive shaft.

5. In a photographic machine for-creating a.

marginally reduced reproduction of a design, the combination of a camera, a copy board therefor, a supporting frame for said copy board, a plurality of means for securing said copy board to said frame and adapted to permit limited relative movement therebetween, meansfor moving said copy board edgewise in a circular path with respect to said frame, and means for displacing said frame and copy board laterally a predetermined distance with respect to the position of said camera.

6. In a photographic machine for creating a marginally reduced reproduction of a design, the combination of a camera, a copy board therefor, a supporting frame for said copy board, a plurality of means for securing said copy board to said frame and adapted to permit limited rel ative movement therebetween, a pair of aligned drive shafts, and an eccentric connection interposed between each of said shafts and said copy board and adapted to move said copy board edge-.

wise in a circular path in response to the rotation of said shafts.

7. In a photographic machine for creating a for, a supporting frame for said copy board, a in a circular path in response to the rotation 01 plurality of means for securing said copy board said shafts. means (or adjusting one 01' said ecto said frame and adapted to permit limited reicentric connections, and means responsive to the ative movement therebetween, a. pair of aligned. operation of said last mentioned means for auto- I drive shafts, an eccentric connection interposed matically adjusting the other of said eccentric I between each of said shafts and said copy board connections a like amount.

and adapted to move said copy board edgewise OWEN R. HUGGINS. 

